Integrated full-bore eccentric hemispherical valve

Abstract

The present invention discloses an integrated full-diameter eccentric hemispherical valve, including a valve body, a valve core and a driving assembly, wherein a hemispherical body is fixedly connected to one side of the valve core, a sealing ring is fixedly connected to the other side of the valve core, an extrusion ring is arranged inside the valve core at the sealing ring position, and the extrusion ring moves back and forth in the centerline direction of the valve core; the rotation of the valve shaft drives the hemispherical body and the valve core to rotate, and the sealing ring rotates accordingly to close the valve seat of the valve body, and the driving assembly pushes the extrusion ring to move in the direction of the sealing ring to extrude and deform the sealing ring, and the sealing ring fits tightly with the valve seat of the valve body to increase the sealing effect between the valve body and the valve body. The provided sealing ring can avoid direct friction between the valve core and the valve seat of the valve body, and avoid the valve core and the valve seat from decreasing the sealing effect due to wear, while the extrusion ring can extrude and deform the sealing ring to fit tightly with the valve seat of the valve body, and avoid excessive water pressure passing through the sealing ring position, thereby ensuring the sealing effect on the valve body.

Description

Technical Field

[0001] The invention belongs to the technical field of eccentric hemispherical valves, and in particular relates to an integrated full-diameter eccentric hemispherical valve. Background Art

[0002] The eccentric semi-ball valve is a special type of valve, mainly used to control the flow of fluid in pipelines. It combines some characteristics of ball valves and butterfly valves, and has unique design features and application advantages. Eccentric semi-ball valves are widely used in petrochemical, natural gas, electric power, metallurgy and other industries, especially in places where high-precision flow control and frequent switching operations are required.

[0003] When sealing, the valve seat contacts the valve core by friction. After long-term use, the valve seat and the valve core will still be worn due to friction, resulting in reduced sealing effect. When the hemispheric valve is in the open state, the valve core is exposed to the water flow, and the water flow will cause erosion on the sealing surface of the valve core, resulting in reduced sealing effect. During use, some substances in the water flow are deposited and attached to the sealing surface of the valve core, affecting the sealing effect between the valve seat and the valve core. Summary of the invention

[0004] The present invention aims to solve the problem that the valve seat and valve core are worn out in the prior art, resulting in a decrease in sealing effect, and proposes the following technical solution:

[0005] An integrated full-diameter eccentric hemispherical valve comprises: a valve body, a valve core and a drive assembly, wherein a valve seat is integrally arranged in the valve body, a hemispherical body is fixedly connected to one side of the valve core, a valve shaft inserted in the valve body is arranged at both ends of the hemispherical body, a sealing ring is fixedly connected to the other side of the valve core, an extrusion ring is arranged inside the valve core at the position of the sealing ring, and the extrusion ring reciprocates in the centerline direction of the valve core;

[0006] The rotation of the valve shaft drives the hemisphere and the valve core to rotate, and the sealing ring rotates accordingly to close the valve seat of the valve body. The driving component pushes the extrusion ring to move toward the sealing ring to extrude and deform the sealing ring. The sealing ring fits tightly against the valve seat of the valve body to increase the sealing effect between the valve body and the valve body.

[0007] As a preferred embodiment of the above technical solution, the driving assembly includes a connecting plate and a rotating shaft, both ends of the connecting plate are fixedly connected to the extrusion ring, one end of the rotating shaft is provided with a pushing block, the rotating shaft drives the pushing block to rotate to move the connecting plate so that the extrusion ring moves toward the sealing ring, the other end of the rotating shaft is inserted into the valve shaft, and the rotating shaft and the valve shaft are rotationally sealed.

[0008] As a preferred embodiment of the above technical solution, the driving assembly also includes: a plug-in block and a driving block connected to an external power device, one end of the plug-in block is movably sleeved on the bottom of the driving block, the other end of the plug-in block is plugged with a connecting block fixedly connected to the rotating shaft, and the end of the valve shaft is provided with a plug-in groove for plugging in the plug-in block.

[0009] As a preferred embodiment of the above technical solution, the plug-in block is polygonal in shape, and the bottom of the plug-in slot matches the plug-in block.

[0010] As a preferred embodiment of the above technical solution, the connecting block is in a polygonal configuration, and the plug-in portion of the plug-in block matches the connecting block.

[0011] As a preferred embodiment of the above technical solution, the bottom of the driving block is configured as a polygon, and the plug-in portion of the plug-in block matches the connecting block.

[0012] As a preferred embodiment of the above technical solution, a bolt is provided on one side of the driving block, and an opening corresponding to the bolt is opened on the surface of the plug-in block.

[0013] As a preferred embodiment of the above technical solution, it also includes an actuator, which is used to drive the valve shaft to rotate to open, close or adjust the opening of the valve.

[0014] The beneficial effects of the present invention are:

[0015] 1. The sealing ring can avoid direct friction between the valve core and the valve seat of the valve body, and prevent the valve core and the valve seat from wearing and causing the sealing effect to decrease. The extrusion ring can extrude and deform the sealing ring to fit tightly with the valve seat of the valve body, and prevent excessive water pressure from passing through the sealing ring position, thereby ensuring the sealing effect of the valve body;

[0016] 2. After the plug-in block enters the plug-in slot, the plug-in block is connected to the valve shaft through the connecting block rotating shaft, and the push block can move with the valve seat without affecting the extrusion ring. After the plug-in block leaves the plug-in slot, the plug-in block connects the rotating shaft to the drive block through the connecting block, and the rotating shaft can rotate freely to move the push block, thereby completing the pushing work of the extrusion ring. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 What is shown is a schematic diagram of the overall structure of an embodiment;

[0018] Figure 2 Shown is a diagram of the open state of the hemispherical valve in the embodiment;

[0019] Figure 3 What is shown is a closed state diagram of the hemispherical valve in the embodiment;

[0020] Figure 4 Shown is a diagram of the installation position of the extrusion ring in the embodiment;

[0021] Figure 5 Shown is a structural diagram of each part of the drive assembly in an embodiment.

[0022] In the figure: 11, valve body; 12, valve core; 13, hemisphere; 14, valve shaft; 21, sealing ring; 22, extrusion ring; 30, drive assembly; 31, connecting plate; 32, rotating shaft; 33, pushing block; 34, plug-in block; 35, driving block; 36, connecting block; 37, plug-in slot; 38, bolt; 40, actuator. DETAILED DESCRIPTION

[0023] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention more clear, the technical solutions of the present invention will be clearly and completely described below in conjunction with the embodiments and the accompanying drawings of the specification.

[0024] Example

[0025] Figure 1-Figure 5 In the embodiment, an integrated full-diameter eccentric hemispherical valve comprises: a valve body 11, a valve core 12 and a drive assembly 30, wherein a valve seat is integrally arranged in the valve body 11, a hemispherical body 13 is fixedly connected to one side of the valve core 12, a valve shaft 14 inserted in the valve body 11 is arranged at both ends of the hemispherical body 13, and a sealing ring 21 is fixedly connected to the other side of the valve core 12, and an extrusion ring 22 is arranged at the position of the sealing ring 21 inside the valve core 12, and the extrusion ring 22 reciprocates in the centerline direction of the valve core 12;

[0026] The rotation of the valve shaft 14 drives the hemisphere 13 and the valve core 12 to rotate, and the sealing ring 21 rotates accordingly to close the valve seat of the valve body 11. The driving component 30 pushes the extrusion ring 22 to move toward the sealing ring 21 to extrude and deform the sealing ring 21. The sealing ring 21 fits tightly against the valve seat of the valve body 11 to increase the sealing effect between the valve body 11 and the valve body 11.

[0027] When the hemispherical valve is closed, the rotating valve shaft 14 rotates to drive the hemispherical body 13 and the valve core 12 to rotate, and the sealing ring 21 on the surface of the valve core 12 rotates accordingly and contacts the valve seat of the valve body 11. When the valve core 12 is fully deflected, the driving assembly 30 pushes the extrusion ring 22 to move toward the sealing ring 21. The sealing ring 21 is squeezed and deformed and fits tightly with the valve seat of the valve body 11 to prevent excessive water pressure from passing through the sealing ring 21.

[0028] The provided sealing ring 21 can avoid direct friction between the valve core 12 and the valve seat of the valve body 11, and prevent the valve core 12 and the valve seat from being reduced in sealing effect due to wear. The extrusion ring 22 can extrude and deform the sealing ring 21 to fit tightly with the valve seat of the valve body 11, and avoid excessive water pressure passing through the sealing ring 21, thereby ensuring the sealing effect on the valve body 11.

[0029] Figure 2-Figure 5In the figure, the driving assembly 30 includes a connecting plate 31 and a rotating shaft 32. Both ends of the connecting plate 31 are fixedly connected to the extrusion ring 22. A pushing block 33 is provided at one end of the rotating shaft 32. The rotating shaft 32 drives the pushing block 33 to rotate to move the connecting plate 31 so that the extrusion ring 22 moves toward the sealing ring 21. The other end of the rotating shaft 32 is inserted into the valve shaft 14, and a rotation seal is formed between the rotating shaft 32 and the valve shaft 14.

[0030] When the extrusion ring 22 needs to be pushed, the rotation shaft 32 is driven to rotate to drive the pushing block 33 to rotate, and the pushing block 33 contacts the connecting plate 31 to push it, so that the extrusion ring 22 can move toward the sealing ring 21 to complete the sealing work.

[0031] Figure 2-Figure 5 In the figure, the driving assembly 30 also includes: a plug-in block 34 and a driving block 35 connected to an external power device, one end of the plug-in block 34 is movably sleeved on the bottom of the driving block 35, and the other end of the plug-in block 34 is plugged with a connecting block 36 fixedly connected to the rotating shaft 32, and the end of the valve shaft 14 is provided with a plug-in groove 37 for plugging in the plug-in block 34.

[0032] The plug-in block 34 is in a polygonal shape, and the bottom of the plug-in slot 37 matches the plug-in block 34 .

[0033] After the valve core 12 closes the valve seat of the valve body 11, the plug-in block 34 is pushed up to make it leave the bottom of the plug-in groove 37 and be sleeved on the surface of the driving block 35. Then, the external power equipment pushes the driving block 35 to rotate. Since the plug-in block 34 is polygonal in design, the bottom of the plug-in groove 37 matches the plug-in block 34, and the plug-in block 34 can drive the rotating shaft 32 to rotate through the connecting block 36.

[0034] After the plug-in block 34 enters the plug-in slot 37, the plug-in block 34 is connected to the valve shaft 14 through the rotating shaft 32 of the connecting block 36, and the pushing block 33 can move with the valve seat without affecting the extrusion ring 22. After the plug-in block 34 leaves the plug-in slot 37, the plug-in block 34 connects the rotating shaft 32 to the driving block 35 through the connecting block 36, and the rotating shaft 32 can rotate freely to move the pushing block 33, thereby completing the pushing work of the extrusion ring 22.

[0035] Figure 2-Figure 5 In the embodiment, the connecting block 36 is in a polygonal configuration, and the plug-in portion of the plug-in block 34 matches the connecting block 36 .

[0036] The bottom of the driving block 35 is in a polygonal shape, and the insertion portion of the plug-in block 34 matches the connecting block 36 .

[0037] The connecting block 36 and the driving block 35 are both polygonal in configuration and can rotate in unison under the action of an external force, thereby converting the work of the rotating shaft 32 to complete the synchronous movement with the valve core 12 or the pushing work of the extrusion ring 22 .

[0038] Figure 2-Figure 5 In the embodiment, a bolt 38 is provided on one side of the driving block 35 , and a hole corresponding to the bolt 38 is opened on the surface of the plug-in block 34 .

[0039] The driving block 35 and the plug-in block 34 can be fixed by the provided bolts 38, so that the driving block 35 can drive the plug-in block 34 to rotate without falling off.

[0040] Figure 1 The valve body 14 further includes an actuator 40, which is used to drive the valve shaft 14 to rotate to open, close or adjust the opening of the valve.

[0041] The above embodiments are only used to illustrate the technical solutions of the present invention, rather than to limit them.

Claims

1. One-piece full-diameter eccentric hemispherical valve, characterized in that: include: A valve body (11), a valve core (12) and a drive assembly (30), wherein a valve seat is integrally arranged in the valve body (11), a hemispherical body (13) is fixedly connected to one side of the valve core (12), a valve shaft (14) inserted into the valve body (11) is arranged at both ends of the hemispherical body (13), a sealing ring (21) is fixedly connected to the other side of the valve core (12), an extrusion ring (22) is arranged inside the valve core (12) at the position of the sealing ring (21), and the extrusion ring (22) moves back and forth in the centerline direction of the valve core (12); The rotation of the valve shaft (14) drives the hemisphere (13) and the valve core (12) to rotate, and the sealing ring (21) rotates accordingly to seal the valve seat of the valve body (11). The driving component (30) pushes the extrusion ring (22) to move toward the sealing ring (21) to extrude and deform the sealing ring (21). The sealing ring (21) is tightly fitted to the valve seat of the valve body (11) to increase the sealing effect between the sealing ring (21) and the valve body (11).

2. The one-piece full-diameter eccentric hemispherical valve according to claim 1, characterized in that: The driving assembly (30) comprises a connecting plate (31) and a rotating shaft (32). Both ends of the connecting plate (31) are fixedly connected to the extrusion ring (22). A pushing block (33) is provided at one end of the rotating shaft (32). The rotating shaft (32) drives the pushing block (33) to rotate to move the connecting plate (31) so that the extrusion ring (22) moves toward the sealing ring (21). The other end of the rotating shaft (32) is inserted into the valve shaft (14), and a rotation seal is formed between the rotating shaft (32) and the valve shaft (14).

3. The one-piece full-diameter eccentric hemispherical valve according to claim 2, characterized in that: The driving assembly (30) further comprises: a plug-in block (34) and a driving block (35) connected to an external power device, one end of the plug-in block (34) being movably sleeved on the bottom of the driving block (35), and the other end of the plug-in block (34) being plugged with a connecting block (36) fixedly connected to the rotating shaft (32), and a plug-in groove (37) for plugging in the plug-in block (34) is provided at the end of the valve shaft (14).

4. The one-piece full-diameter eccentric hemispherical valve according to claim 3, characterized in that: The plug-in block (34) is in a polygonal shape, and the bottom of the plug-in slot (37) matches the plug-in block (34).

5. The one-piece full-diameter eccentric hemispherical valve according to claim 3, characterized in that: The connecting block (36) is in a polygonal configuration, and the plug-in portion of the plug-in block (34) matches the connecting block (36).

6. The one-piece full-diameter eccentric hemispherical valve according to claim 2, characterized in that: The bottom of the driving block (35) is in a polygonal shape, and the insertion point of the plug-in block (34) matches the connecting block (36).

7. The one-piece full-diameter eccentric hemispherical valve according to claim 2, characterized in that: A bolt (38) is provided on one side of the driving block (35), and an opening corresponding to the bolt (38) is provided on the surface of the plug-in block (34).

8. The one-piece full-diameter eccentric hemispherical valve according to claim 1, characterized in that: It also includes an actuator (40), which is used to drive the valve shaft (14) to rotate to open, close or adjust the opening of the valve.

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